swiftlang/swift

Separate `-dump-clang-diagnostics` into two features.

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#87,757 opened on 2026年3月9日

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 (4 comments) (0 reactions) (1 assignee)Swift (69,989 stars) (10,719 forks)batch import
clang importergood first issue

説明

Motivation

-dump-clang-diagnostics currently does two somewhat orthogonal things:

  1. emits ad-hoc "remarks" on things ClangImporter is doing to stderr
  2. emits clang diagnostics through both clang's and swift's diagnostic engine

Proposed solution

We should extract 1) into actual remarks, and enable them with -Rclang-importer (or whatever option https://github.com/swiftlang/swift/pull/87726 ends up adding).

Alternatives considered

-dump-clang-diagnostics may be left with just 2), or also enabling -Rclang-importer by default to keep the same behavior. I personally lean towards the former to avoid tangling orthogonal concepts, but I don't have a strong opinion.

Additional information

No response

コントリビューターガイド

技術スタック
swiftcshell
領域
backenddeveloper experiencetooling
Issue 種別
refactor
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
4
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
3-5 days
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
blocked
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
clear
前提条件
Swift compiler internalsClangImporterDiagnostics system
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
25
調査方針
Investigate the current implementation of ` dump clang diagnostics` in the Swift compiler (likely in `lib/ClangImporter/`). Separate the ad hoc remarks into actual remarks using ` Rclang importer` (as proposed in https://github.com/swiftlang/swift/pull/87726). Determine which part should remain under ` dump clang diagnostics` and whether to enable both by default. The issue has an assignee, so clarify with them if any work is already in progress.